Bobcat M1402 (14-02) Fault Code: Fuel Pull Output Error On
Also shown on the panel as 14-02 · Also called Fuel Pull Solenoid Error On
Fuel Pull Output Error On · ai-assisted, editor-reviewed · Last updated 2026-07-13
TL;DR
M1402 sets when the gateway controller sees voltage on the fuel pull output wire 8110 when it did not command that output on. Because the controller can't trust the fuel pull circuit, it disables the starter until the fault is fixed and power is cycled.
High severity. The machine will not start with this code active because the starter is disabled. It is not a machine-damage risk by itself, but it stops the operator from working until it is diagnosed, so treat it as a stop-and-fix issue rather than something to run through a shift with.
What does Bobcat error code M1402 mean?
M1402, shown on the panel as 14-02, is a Bobcat gateway controller fault tied to the fuel pull circuit. This circuit is what energizes the fuel pull relay, which in turn sends high current down the pull wire 8100 to move fuel system linkage or a shutoff solenoid when the operator commands a start.
The controller expects to see voltage on output wire 8110 only when it itself has commanded the fuel pull relay on. If it detects voltage there when it did not issue that command, it assumes something downstream is wired or shorted incorrectly, or a relay or connector has failed, and it sets M1402.
Because a fuel pull circuit that turns on unexpectedly could be a safety and reliability problem during starting, Bobcat's response is to disable the starter entirely until the issue is resolved. This protects against uncontrolled cranking or fuel delivery behavior tied to a fault the controller cannot verify.
Common causes of M1402
- Controller output wire 8110 shorted to supply voltage
- Failed fuel pull relay
- Failed gateway controller
- Moisture, corrosion, or pushed-back pins in the gateway controller connector, fuel pull relay connectors, or the mainframe harness
- Intermittent fault where the cause is not present at the time of testing; probable contributors in that case include loose connections, corrosion, pushed-back pins, the controller itself, the wire harness, or a combination of these
How to troubleshoot Bobcat M1402: first checks
- Confirm the key switch is in the run/enter position, since this is the condition under which the code is checked for
- Inspect the gateway controller connector and fuel pull relay connectors for moisture, corrosion, or pins that have pushed back out of their sockets
- Check wire 8110 for a short to supply voltage, since this is the specific wiring fault Bobcat calls out for this code
- Trace the mainframe harness around the fuel pull relay and gateway controller for chafing, pinched sections, or loose terminals
- If the code is not currently active, treat it as intermittent and focus on connection integrity (loose pins, corrosion) rather than assuming a single failed part
How the code clears
Once the repair is complete, the code clears by cycling power. No separate clearing step or procedure is listed beyond turning the key off and back on.
Affected models and serial ranges
M1402 appears in our records across 16 Bobcat models. Match your machine by model and serial number.
| Model | Serial ranges |
|---|---|
| S510 | SN A3NJ11001-99999, SN A3NK11001-99999, SN ATZC11001-ATZC99999 |
| S530 | SN A7TV11001-99999, SN ATZD11001-99999 |
| S550 | SN A3NK11001-A3NL99999, SN A3NM11001-99999 |
| S570 | SN A7U711001-799999, SN A7U811001-899999 |
| S590 | SN ANMN11001-99999, SN ANMP11001-99999 |
| S630 | SN A3NT12370-99999, SN A3NU11001-11111, SN A3NU11112-99999 |
| S650 | SN A3NV11001-13098, SN A3NV13099-99999, SN A3NW11001-11248, SN A3NW11249-99999 |
| S750 | SN A3P211001-299999 |
| S770 | SN A3P411001-99999 |
| T550 | SN A7UJ11001-AJZV12276 |
| T590 | SN ALJU11001-999999, SN B37811001-999999, SN B3Z711001-999999 |
| T630 | SN A7PU11001-11663, SN A7PU11664-99999 |
| T650 | SN A3P012214-099999, SN A3P111242-199999 |
| T750 | SN ANKA11001-A99999 |
| T770 | SN A3P811001-899999, SN A3P911001-999999 |
| T870 | SN A3PG11001-99999, SN A3PH11001-99999 |
Frequently asked questions
What does Bobcat code M1402 mean?
It means the gateway controller detected voltage on the fuel pull output, wire 8110, when it had not commanded that output on. This points to a wiring, relay, or controller problem in the fuel pull circuit.
Why won't my Bobcat start with M1402 active?
When M1402 is set, the gateway controller disables the starter. This is intentional, since the controller cannot trust the fuel pull circuit's behavior, so it prevents cranking until the fault is cleared.
What is the fuel pull relay and why does it matter?
The fuel pull relay is energized by wire 8110 from the gateway controller. When it activates, it sends high current down wire 8100 to carry out the fuel pull function tied to starting the engine. A miscommand or short in this circuit is what M1402 is watching for.
How do I clear M1402 after fixing the problem?
Cycle power (turn the key off, then back on) once the repair is complete. No other clearing procedure is listed.
What if the code isn't active when I check it?
Bobcat notes this code can be intermittent. If it's not on at the time of testing, the root cause may not be found immediately. Focus on loose connections, corrosion, and pushed-back pins in the gateway controller and fuel pull relay connectors, since these are common intermittent culprits.
Which Bobcat models can show M1402?
It applies across a wide range of skid-steer and compact track loader models, including the S510, S530, S550, S570, S590, S630, S650, S750, S770, T550, T590, T630, T650, T750, and T770 as well as the T870.
Can I diagnose M1402 myself or do I need a dealer?
A mechanic comfortable with checking connectors for corrosion and pushed-back pins, and testing a wire for a short to supply voltage, can often work through the basic checks. If those checks come back clean and the fault persists or returns intermittently, it likely points to the fuel pull relay or gateway controller itself, which may need dealer-level testing or replacement.